This level used some very creative concepts and combined with its non-linear movement was pretty fun to play. It was very short though and could easily be exploited by Luigi (he can jump off of the Koopa Troopa to get over the first wall and complete the level in about 10 seconds total.) The level also seemed a bit unfinished and there were a few spots that were too cramp. The coin placement was a bit clustered (too many coins in one area, not enough in another) and they need to be spread out a little more. Power-up placement was fine. The vanilla graphics were used well in this level, but the idea of the switches looked really messy. My only other complaint about this level is the waterfalls. There's really no need to make them swimmable since you never really use them to get to higher places, etc. and they just slow down the player's movements without reason.